As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING SCHEDULED REPLACEMENT OF THE FORWARD ECS HEAT EXCHANGER AND CONDENSER/MIXER, THE FORWARD AIR CYCLE MACHINE WAS FOUND TO BE CONTAMINATED WITH OIL. THE ACM WAS REPLACED. THIS UNIT HAD ONLY BEEN IN SERVICE FOR 1998 HOURS SINCE OVERHAUL AND MODIFICATION BY HAMILTION SUNSTRAND. WC 160